22200112021 has 2 divisors, whose sum is σ = 22200112022. Its totient is φ = 22200112020.

The previous prime is 22200112019. The next prime is 22200112079. The reversal of 22200112021 is 12021100222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11916123921 + 10283988100 = 109161^2 + 101410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200112021 - 2¹ = 22200112019 is a prime.

Together with 22200112019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22200111992 and 22200112010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200112321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100056010 + 11100056011.

It is an arithmetic number, because the mean of its divisors is an integer number (11100056011).

Almost surely, 2^22200112021 is an apocalyptic number.

It is an amenable number.

22200112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200112021 is an equidigital number, since it uses as much as digits as its factorization.

22200112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22200112021 its reverse (12021100222), we get a palindrome (34221212243).

The spelling of 22200112021 in words is "twenty-two billion, two hundred million, one hundred twelve thousand, twenty-one".